Question on TCP_INFO and retransmits.

The tcp_info structure that is available with getsockopt(...TCP_INFO) has a tcpi_retransmits field and a tcpi_retrans field.

I was hoping that one of these would be monatomically incrementing and keep track of all of the retransmits for the socket since it was opened...

However, it appears that these counters are reset to zero fairly often, making it difficult or impossible to use them to detect actual TCP retransmits.

Is there some other way to detect the number of retransmitted packets?

Thanks,
Ben

Ben Greear <[email protected]>
Candela Technologies Inc  http://www.candelatech.com